Ship-building construction.



D. JOHNSON.

SHIP BUILDING CONSTRUCTION APPLICATION FILED MAY a1, 1913.

PatentedvMay 19, 1914,.-

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Inventor IZJW Attorneys D. JOHNSON.

SHIP BUILDING GONSTRUCTION..

APPLICATION FILED MAY 31, 1913.

Patented May 19, 1914.

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Attorneys UNITED STATES PATENT OFFICE.

DAVID JOHNSON, OF BURWELL, NEBRASKA, ASSIGNOR OF ONE-HALF TO JOSEPH MEURET, 0F DENVER, COLORADO.

SHIP-BUILDING CONSTRUCTION.

T 0 all whom it may concern Be it known that I, DAVID JoHNsoN, a citizen of the United States, residing at Burwell, in the county of Garfield and State of Nebraska, have invented a new and useful Ship-Building Construction, of which the following is a specification.

One object of the invention is to provide a vessel which will withstand shocks of all kinds and to be practically unsinkable.

Another object of the invention is to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

With the above and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of invention herein disclosed can be made withln the scope of what is claimed without departing from the spirit of the invention.

In the drawing :-F igure 1 shows the invention in side elevation; Fig. 2 is a vertical longitudinal section; Fig. 3 is a top plan parts being broken away; Fig. 4 1s a transverse section on the line 44 of Fig. 2; and Fig. 5 is a transverse section on the line 55 of Fig. 2.

In carrying out the invention there is provided a main hull 1, at the bow 2 of which may be located a ram 3. Outstandlng from the main hull 1 is an outer deck 4 which preferably, as shown in Fig. l inclines downwardly toward the stern of the vessel. In operation, the outer deck 4 lies close to the surface of the water. The main hull 1 is provided with a skeg 5 and an overhang 6, supporting the rudder 7 The propeller 8 is located in front of the rudder 7 and the propeller shaft is indicated at 9. The main hull 1 is provided with a heavy keel 10, adapted to withstand shocks, such as are imposed upon the vessel should the same run upon a shoal.

Located in the main hull 1 and spaced therefrom is a secondary hull 11, and the hulls 1 and 11 are connected by an inner deck 12. The inner deck 12 supports a railing 12 and across the secondary hull extends a hurricane deck 14. Superposed upon the outer deck 4 is a casing 15 which is curved both longitudinally and trans- Specification of Letters Patent.

Application filed May 31, 1913.

Patented May 19, 1914.

Serial No. 771,106.

versely, the casing 15 being provided at its crown with a flue 16. The casing 15 is reinforced as indicated at 17 both longitudinally and transversely and is provided with port holes 18. v

Located approximately amidships and supported upon the bottom 19, of the secondary hull 11 is a well 20. Pipes 21 are applied to the outer face of the main hull 1 adjacent the stern of the vessel. The rear ends of the pipes 21 are open and the forward ends of the pipes communicate with pipes 22 located between the hulls 1 and 11. The pipes 22 at their forward ends termi nate in transverse extensions 23 which enter the sides of the well 20. Fore and aft pipes 24 lie between the hulls 11 and 1 and enter the extensions 23 of the pipes 22. The pipes 24 at their forward ends are provided with extensions 25 which open outwardly through the main hull 1 adjacent the bow. An upright pipe 26 is located within the secondary hull 11, adjacent the bow. The pipe 27 communicates with the lower end of the pipe 26, the rear end of the pipe 27 terminating in an upright extension 28 prolonged as indicated at 29 into the well 20. The upright pipe 26 at its upper end communicates with a transverse tubular head 30, the ends of which open outside of the main hull 1 as shown at 31 in Fig. l. A fore and aft pipe 32 communicates with the central portion of the tubular head 30 and abuts against the well 20.

Preferably, the space between the hulls 1 and 11 is filled with a cork, as indicated at 33, or with some other buoyant material.

From the foregoing it will be seen that I have devised a vessel of extremely strong construction which will withstand severe shocks and be practically unsinkable.

It is obvious that the construction herein disclosed, may, with slight modifications which will be obvious to those skilled in the art, be adapted to car ferries and like vessels, upon the decks of which cars are carried.

The piping system shown and described constitutes a part of the propulsion and dis charge mechanism of the vessel, and since these features cannot be claimed in the present application, the functions of the several pipes above described need not be referred to in detail, saving in a general manner. The functions of the pipes are immaterial to the present invention, but the locations of the pipes with respect to the hulls of the. vessel and other parts thereof are of im portance, irrespective of the functions of the pipes.

Considered briefly, as shown in Fig. 5, the invention comprises a main hull 1, an inner deck 12 and an outer deck 4, which taken together, may be considered as a main deck which is secured to the main hull l and projects within the main hull. The secondary hull 11 is located within the main hull 1 and is upheld by he main deck referred to. The secondary hull 11 upstands above the main deck, so that the height of the well 20 may be increased to afford the necessary head room for the engine or other machinery. The hurricane deck 14 is supported upon the upper portion of the secondary hull 11. Owing to the fact that the well 20 is provided, the operating machinery of the vessel is protected, upon each side, by three walls, as Fig. 5 will clearly indicate. The functions of the pipes, of which the pipe 22 may be taken as typical, have been referred to hereinbefore, and it is to be observed that this pipe 22 is so placed that it will not be injured readily by internal shocks, neither will it be in the way of the machinery in the well 20 or be subject to damage, should any of the machinery within the well break. When the construction is embodied in a light vessel of the torpedo boat type, the pipes 22, clearly shown in Fig. 5 serve to hold together, the well 20 and the secondary hull 11.

Having thus described the invention, what is claimed is 1. A vessel comprising a main hull; a main deck secured to the main hull and projecting inwardly within the main hull and outwardly beyond themain hull; a secondary hull located within the main hull and secured to the inwardly projecting portion of the main deck, the secondary hull upstanding above the main deck; a hurricane deck secured to the upper portion of the secondary hull and projecting laterally beyond the secondary hull; and a railing interposed between the laterally projecting portion of the hurricane deck and the outwardly projecting portion of the main deck, the outwardly projecting portion of the main deck defining a passageway around the railing.

2. A vessel comprising a main hull; a main deck secured to the main hull and projecting within the main hull; a secondary hull located within the main hull and upheld by the main deck, the secondary hull upstanding above the main deck; a hurricane deck supported upon the upper portion of the secondary hull; and a well located within the secondary hull and upstanding above the main deck.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

DAVID JOHNSON.

Vitnesses JAS. BUTLER, H. E. TABOR.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner ofPatents, Washington, D. C. 

